:root {
      --page-go789__primary-color: #ff4500; /* Màu cam nổi bật */
      --page-go789__secondary-color: #ffd700; /* Màu vàng Gold */
      --page-go789__accent-color: #00bfff; /* Màu xanh dương nhạt */
      --page-go789__dark-bg: #1a1a2e; /* Nền tối */
      --page-go789__light-text: #ffffff;
      --page-go789__dark-text: #333333;
      --page-go789__card-bg: #2e2e4a;
      --page-go789__button-hover: #e03a00;
    }

    .page-go789 {
      font-family: 'Arial', sans-serif;
      color: var(--page-go789__light-text);
      background-color: var(--page-go789__dark-bg);
      line-height: 1.6;
    }

    .page-go789__hero-section {
      position: relative;
      width: 100%;
      min-height: 400px;
      display: flex;
      flex-direction: column;
      justify-content: center;
      align-items: center;
      text-align: center;
      background-size: cover;
      background-position: center;
      color: var(--page-go789__light-text);
      padding: 10px 20px 60px; /* Adjusted padding-top for fixed header */
      box-sizing: border-box;
      overflow: hidden;
    }

    .page-go789__hero-image {
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      object-fit: cover;
      z-index: 0;
    }

    .page-go789__hero-content {
      position: relative;
      z-index: 1;
      max-width: 900px;
      padding: 20px;
      background: rgba(0, 0, 0, 0.5);
      border-radius: 10px;
    }

    .page-go789__hero-title {
      font-size: 2.8em;
      margin-bottom: 15px;
      color: var(--page-go789__secondary-color);
      text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.7);
    }

    .page-go789__hero-subtitle {
      font-size: 1.3em;
      margin-bottom: 30px;
      color: var(--page-go789__light-text);
    }

    .page-go789__button {
      display: inline-block;
      padding: 15px 30px;
      background-color: var(--page-go789__primary-color);
      color: var(--page-go789__light-text);
      border: none;
      border-radius: 8px;
      font-size: 1.1em;
      font-weight: bold;
      cursor: pointer;
      transition: background-color 0.3s ease, transform 0.2s ease;
      text-decoration: none;
      text-align: center;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
    }

    .page-go789__button:hover {
      background-color: var(--page-go789__button-hover);
      transform: translateY(-2px);
    }

    .page-go789__promotion-banner {
      position: fixed;
      bottom: 20px;
      right: 20px;
      background-color: var(--page-go789__primary-color);
      color: var(--page-go789__light-text);
      padding: 15px 25px;
      border-radius: 50px;
      box-shadow: 0 5px 15px rgba(0, 0, 0, 0.4);
      z-index: 1000;
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.1em;
      font-weight: bold;
      animation: page-go789__pulse 2s infinite;
      cursor: pointer;
      text-decoration: none;
      text-align: center;
      max-width: 280px;
      box-sizing: border-box;
    }
    
    .page-go789__promotion-banner:hover {
        background-color: var(--page-go789__button-hover);
    }

    @keyframes page-go789__pulse {
      0% { transform: scale(1); }
      50% { transform: scale(1.05); }
      100% { transform: scale(1); }
    }

    .page-go789__section {
      padding: 60px 20px;
      max-width: 1200px;
      margin: 0 auto;
      text-align: center;
      box-sizing: border-box;
    }

    .page-go789__section-title {
      font-size: 2.2em;
      color: var(--page-go789__secondary-color);
      margin-bottom: 40px;
      position: relative;
      padding-bottom: 10px;
    }

    .page-go789__section-title::after {
      content: '';
      position: absolute;
      left: 50%;
      bottom: 0;
      transform: translateX(-50%);
      width: 80px;
      height: 4px;
      background-color: var(--page-go789__primary-color);
      border-radius: 2px;
    }

    .page-go789__game-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 30px;
      margin-top: 40px;
    }

    .page-go789__game-card {
      background-color: var(--page-go789__card-bg);
      border-radius: 12px;
      overflow: hidden;
      box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
      transition: transform 0.3s ease, box-shadow 0.3s ease;
      text-align: left;
      display: flex;
      flex-direction: column;
    }

    .page-go789__game-card:hover {
      transform: translateY(-8px);
      box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    }

    .page-go789__game-image {
      width: 100%;
      height: 200px;
      object-fit: cover;
      display: block;
    }

    .page-go789__game-content {
      padding: 25px;
      flex-grow: 1;
    }

    .page-go789__game-title {
      font-size: 1.5em;
      color: var(--page-go789__secondary-color);
      margin-bottom: 10px;
    }

    .page-go789__game-description {
      font-size: 0.95em;
      color: #ccc;
    }

    .page-go789__feature-list {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
      gap: 30px;
      list-style: none;
      padding: 0;
    }

    .page-go789__feature-item {
      background-color: var(--page-go789__card-bg);
      padding: 30px;
      border-radius: 12px;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
      text-align: left;
      display: flex;
      align-items: flex-start;
      gap: 20px;
    }

    .page-go789__feature-icon {
      width: 60px;
      height: 60px;
      object-fit: contain;
      flex-shrink: 0;
    }

    .page-go789__feature-heading {
      font-size: 1.4em;
      color: var(--page-go789__primary-color);
      margin-bottom: 10px;
    }

    .page-go789__feature-text {
      font-size: 1em;
      color: #e0e0e0;
    }

    .page-go789__how-to-play-steps {
      display: flex;
      flex-wrap: wrap;
      justify-content: center;
      gap: 30px;
      margin-top: 40px;
    }

    .page-go789__step-card {
      background-color: var(--page-go789__card-bg);
      border-radius: 12px;
      padding: 30px;
      max-width: 300px;
      text-align: center;
      box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
      position: relative;
      flex: 1 1 280px;
      box-sizing: border-box;
    }

    .page-go789__step-number {
      font-size: 2.5em;
      font-weight: bold;
      color: var(--page-go789__primary-color);
      margin-bottom: 15px;
      line-height: 1;
    }

    .page-go789__step-title {
      font-size: 1.3em;
      color: var(--page-go789__secondary-color);
      margin-bottom: 15px;
    }

    .page-go789__step-description {
      font-size: 0.95em;
      color: #ccc;
    }

    .page-go789__faq-container {
      margin-top: 40px;
      text-align: left;
    }

    .page-go789__faq-item {
      background-color: var(--page-go789__card-bg);
      margin-bottom: 15px;
      border-radius: 8px;
      overflow: hidden;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
    }

    .page-go789__faq-question {
      display: flex;
      justify-content: space-between;
      align-items: center;
      padding: 15px 20px;
      cursor: pointer;
      user-select: none;
      background-color: #3a3a5a;
      border-bottom: 1px solid #4a4a6a;
    }

    .page-go789__faq-question:hover {
      background-color: #4a4a6a;
    }

    .page-go789__faq-question h3 {
      margin: 0;
      font-size: 1.1em;
      color: var(--page-go789__light-text);
      pointer-events: none; /* Prevent h3 from blocking click */
    }

    .page-go789__faq-toggle {
      font-size: 1.5em;
      font-weight: bold;
      color: var(--page-go789__primary-color);
      transition: transform 0.3s ease;
      pointer-events: none; /* Prevent toggle icon from blocking click */
    }

    .page-go789__faq-item.active .page-go789__faq-toggle {
      transform: rotate(45deg);
    }

    .page-go789__faq-answer {
      max-height: 0;
      overflow: hidden;
      padding: 0 20px;
      opacity: 0;
      transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), padding 0.4s ease, opacity 0.4s ease;
      background-color: #2e2e4a;
      color: #ccc;
      font-size: 0.95em;
    }

    .page-go789__faq-item.active .page-go789__faq-answer {
      max-height: 2000px !important; /* Sufficiently large to contain content */
      padding: 20px !important;
      opacity: 1;
    }

    .page-go789__contact-section {
      background-color: #2e2e4a;
      padding: 50px 20px;
      text-align: center;
      color: var(--page-go789__light-text);
      border-radius: 12px;
      margin: 40px auto;
      max-width: 800px;
      box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
    }

    .page-go789__contact-title {
      font-size: 2em;
      color: var(--page-go789__secondary-color);
      margin-bottom: 20px;
    }

    .page-go789__contact-text {
      font-size: 1.1em;
      margin-bottom: 30px;
    }

    /* Responsive adjustments */
    @media (max-width: 1024px) {
      .page-go789__hero-title {
        font-size: 2.5em;
      }
      .page-go789__hero-subtitle {
        font-size: 1.2em;
      }
      .page-go789__section-title {
        font-size: 2em;
      }
      .page-go789__game-grid, .page-go789__feature-list {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      }
    }

    @media (max-width: 768px) {
      .page-go789__hero-section {
        min-height: 350px;
        padding-top: 10px; /* Adjusted padding-top for fixed header on mobile */
      }
      .page-go789__hero-title {
        font-size: 2em;
      }
      .page-go789__hero-subtitle {
        font-size: 1em;
      }
      .page-go789__section {
        padding: 40px 15px;
      }
      .page-go789__section-title {
        font-size: 1.8em;
        margin-bottom: 30px;
      }
      .page-go789__game-grid, .page-go789__feature-list, .page-go789__how-to-play-steps {
        grid-template-columns: 1fr;
        gap: 20px;
        width: 100% !important;
        max-width: 100% !important;
        padding: 0 !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
        box-sizing: border-box !important;
      }
      .page-go789__game-card, .page-go789__feature-item, .page-go789__step-card {
        width: 100% !important;
        max-width: 100% !important;
        box-sizing: border-box !important;
        margin-left: 0 !important;
        margin-right: 0 !important;
      }
      .page-go789__feature-item {
        flex-direction: column;
        align-items: center;
        text-align: center;
      }
      .page-go789__feature-icon {
        margin-bottom: 15px;
      }
      .page-go789__promotion-banner {
        bottom: 15px;
        right: 15px;
        padding: 12px 20px;
        font-size: 0.95em;
        max-width: 200px;
      }
      .page-go789__faq-question {
        padding: 12px 15px;
      }
      .page-go789__faq-question h3 {
        font-size: 1em;
      }
      .page-go789__faq-answer {
        padding: 15px !important;
        word-wrap: break-word !important;
        overflow-wrap: break-word !important;
        word-break: break-word !important;
      }
      .page-go789__button {
        padding: 12px 25px;
        font-size: 1em;
      }
    }

    @media (max-width: 480px) {
      .page-go789__hero-title {
        font-size: 1.8em;
      }
      .page-go789__hero-subtitle {
        font-size: 0.9em;
      }
      .page-go789__section-title {
        font-size: 1.6em;
      }
    }